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Spence602

Joined: 16 Sep 2003 Posts: 475 Location: USA TX Houston
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Posted: Thu Oct 28, 2004 8:31 am Post subject: Rheostat/dimmer for your hot-cutter |
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I've seen a couple different posts inquiring about a hot-cutter that cuts too hot, or a suggestion to use a dimmer, but I haven't seen a schematic.
Until now (Now updated to a 'safer and standard' example).
This is an example - not the gospel.
It's an Americanized version - all of you outside the US will have to figure out a version which works for you.
Once it's built, put a faceplate on it and test out the correct heat settings for different types (and layers) of material, and use a Sharpie to mark the setting.
HTH _________________ Spence
www.kiteshark.org
Air: Refreshing when stirred up and served cool on a hot day.
Last edited by Spence602 on Thu Oct 28, 2004 11:52 am; edited 1 time in total |
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smarties

Joined: 05 Nov 2003 Posts: 1297 Location: Dieppe, NB, Canada
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Posted: Thu Oct 28, 2004 9:04 am Post subject: |
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Thanks for you drawing Spence602. Very easy to understand.
As an electrical engineer, I have to suggest some slight changes to be more "safe and standard". Normally the left prong on a power outlet is the neutral. I would recommend that the dimmer is connected on the right prong instead where the live wire is as shown below. Sorry for the bad resolution.
In Canada, the black is the live wire and the white is the neutral.
_________________ Smarties
http://smarties42.webpal.info/index-en.html
To boldly go where no imagination as gone before!  |
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mhartzel

Joined: 09 Dec 2003 Posts: 558 Location: USA, Michigan, Fraser
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Posted: Thu Oct 28, 2004 9:07 am Post subject: |
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To the best of my knowledge, (at least what I have seen while working on my own house)
Standard US 110/115 AC voltage wire colors are:
Black for Hot
White for Neutral
Bare copper for ground
The colors in the picture should be reserved for DC voltage, unless you are running multiple switches for one light (like at the top and bottom of your basement stairs)
Then the colors of the 4 wires are
Black, Red, white and Copper.
Another variation on the picture is to use a 1 gang (or single outlet) box to house the rheostat, a short 3 wire extension cord and have the outputs go to the female end of the extension cord. _________________ Mark
Sand, Street or Sky... I love to fly.
- Take back the web. |
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Spence602

Joined: 16 Sep 2003 Posts: 475 Location: USA TX Houston
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Posted: Thu Oct 28, 2004 11:40 am Post subject: |
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@ Smarties
Thanks! I'll replace my picture with your picture (if you don't mind)...
@mhartzel
It's an extension cord (of sorts), not 'house' wiring. When I go to the 'home improvement' store, they have all sorts of wiring to choose from.
Personally, I used some Romex (sheathed 12-gauge 4-strand) I had left over from an outdoor pool project. My outlet is above my work surface, and with the heavy gauge wire, I can position my 'box' by bending the wire, and then bending it to get it out of my way when I'm not using it. _________________ Spence
www.kiteshark.org
Air: Refreshing when stirred up and served cool on a hot day. |
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CJQ Master Kite Builder


Joined: 27 Dec 2003 Posts: 674 Location: Coopersburg, PA - USA
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Posted: Thu Oct 28, 2004 12:52 pm Post subject: Dimmer Control |
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Hi Guy's, The 15 AMP I25 VOLT PLUG will have a brass colored terminal for the black wire , a silver colored terminal for the neuteral or white colored wire and a green colored terminal for the green ground safety wire. Some dimmers will have a green wire pigtail or green screw for attaching a ground wire to it, just as the duplex outlet. SO there will be a green wire connection that will go from the male plug and attach the Metal Box housing the devices then to the outlet and also the dimmer , this will safety bond everything ,thus eliminatinga shock hazard . Want all of you fellow kiters to be safe!!!
CLIFF |
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KiteSquid Master Kite Builder


Joined: 29 Aug 2003 Posts: 3496 Location: USA Virginia King George
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Posted: Thu Oct 28, 2004 12:58 pm Post subject: |
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BTW Dimmers are NOT for inductive loads... so DONT plug anyting with a motor or transformer into this rig.
That includes the Engle Hot Cutter that Steve sells..... It has a step down transformer.....
You will know when the dimmer explodes....
To modify a dimmer to operate an inductive load look HERE for how somebody did one quite a few years ago, but he does not state what model of dimmer he used.....so Caviet Emptor.
Or you can buy a "router speed control" to do the same job at higher wattages, but dont buy the one from Harbor Freight as the one I bought did not do the job well........... They are EXPENSIVE like $60 or more for a good one. _________________ VR/
KiteSquid
AKA TakoIka
AKA Harold
King George VA
P.S. Yet another post by the Squid..... Doesent he ever shut up???
P.P.S. The wind is like the air, only pushier. |
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skydino
Joined: 12 Dec 2003 Posts: 183 Location: TX
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Posted: Thu Oct 28, 2004 1:16 pm Post subject: |
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http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=43060
GOOD for even an old sewing machine
If you are going to make one use a speed control for a ceiling fan type ! |
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CJQ Master Kite Builder


Joined: 27 Dec 2003 Posts: 674 Location: Coopersburg, PA - USA
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Posted: Thu Oct 28, 2004 4:48 pm Post subject: Heat controler |
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Hi Sky dyno, Harbor freight product---Good deal can't beat that with a stick!! Also a controler ( dimmer/ speed control ) for a Casa Blanca Ceiling fan produces a Sinesotal output good for inductive loads. Smarties correct me if i'm wrong.
CLIFF |
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KiteSquid Master Kite Builder


Joined: 29 Aug 2003 Posts: 3496 Location: USA Virginia King George
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Posted: Fri Oct 29, 2004 7:59 am Post subject: |
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I have that Harbor Freight Router Speed Control and it did not work well on a motor I wanted to control that was within it's aperage limits...
Oh well...
BTW you milage may vary... _________________ VR/
KiteSquid
AKA TakoIka
AKA Harold
King George VA
P.S. Yet another post by the Squid..... Doesent he ever shut up???
P.P.S. The wind is like the air, only pushier. |
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smarties

Joined: 05 Nov 2003 Posts: 1297 Location: Dieppe, NB, Canada
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Posted: Fri Oct 29, 2004 8:19 am Post subject: Re: Heat controler |
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CJQ wrote: | Hi Sky dyno, Harbor freight product---Good deal can't beat that with a stick!! Also a controler ( dimmer/ speed control ) for a Casa Blanca Ceiling fan produces a Sinesotal output good for inductive loads. Smarties correct me if i'm wrong.
CLIFF |
Yup!  _________________ Smarties
http://smarties42.webpal.info/index-en.html
To boldly go where no imagination as gone before!  |
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